Calling all "Twi-hards" (Twilight die hards) Now you too can walk down the aisle like Bella Swan.    The wedding dress that Bella Swan (Kristen Stewart) wears in "The Twilight Saga: Breaking Dawn - Part 1" will be available in bridal gown shops for those so inclined to sport the Vampire bride's wedding day frock.   This official replica of the gown Carolina Herrera designed will be recreated by Alfred Angelo with a price tag of $799 and will be available in Alfred Angelo stores nationwide.        The sheath style dress is made of liquid satin with long, lace-trimmed sleeves.  The back of the gown features a plunging cut-out covered with a Chantilly-inspired lace applique, fabric-covered buttons and a chapel train.  Are you Twi-hard enough to wear Bella's gown?